#include<bits/stdc++.h>
using namespace std;int main(){int n,i,a[1000];cin>>n;for(i=1;i<=n;i++)cin>>a[i];float s=100;for(i=1;i<n;i++)if(a[i+1]<a[i])s=s*a[i]/a[i+1];printf("%.2f\n",s);return 0;}
